Rose plant Jacmur

ABSTRACT

A rose variety of the hybrid tea class is provided having vigorous, well branched growth, an abundance of large, dark green, semi-glossy foliage with blooms of white (having a slight indication of yellow pigment) and very little fragrance, and with numerous stipitate glands on the edge and outer surface of sepals on the rachis.

SUMMARY OF THE DISCOVERY

The present discovery relates to a new and distince variety of roseplant of the hybrid tea class, which I discovered in a cultivated areaand I asexually reproduced. This new rose variety is a mutation of therose plant designated "Pristine", which variety is described andillustrated in U.S. Plant Pat. No. 3,997, issued Dec. 21, 1976, inventorWarriner, incorporated herein by reference and of common assignmentherewith.

The rose plant of the present discovery has a unique combination ofcharacteristics which are outstanding in the new variety and whichdistinguish it from the rose plant Pristine, as well as from all othervarieties of which I am aware. For example, this new rose variety has:

White buds and flowers with a slight indication of yellow pigment,rather than the pink areas on white buds and flowers of the Pristinevariety.

Asexual reproduction of this new variety by budding, as performed atWasco, Calif., shows that the foregoing characteristic and distinctioncomes true to form and is established and transmitted through succeedingpropagation.

DESCRIPTION OF THE DRAWING

The accompanying illustration shows a typical bud and flower of this newvariety and, for contrast, a typical bud and flower of the Pristinevariety, depicted in color as nearly true as it is reasonably possibleto make the same in a color illustration of this character.

DETAILED DESCRIPTION OF THE DISCOVERY

The following is a detailed description of my new rose variety, whichhas been denominated "JACMUR". Color terminology is in accordance withWilson's Horticultural Color Chart except where an ordinary dictionarysignificance for the color is apparent or where reference is made to theRoyal Horticultural Society Colour Chart.

Discovery of this mutation was in a cultivated area (a nursery) inCitrus Heights, Calif., and observations of the buds and flowers of theasexually reproduced plant were made in nurseries at Citrus Heights,Calif. and Irvine, Calif. Except as specifically indicated, the new rosevariety is identical to the Pristine variety.

Flower

The blooming habit is continuous. The bud size is about one and one-halfinches when the petals start to unfurl. The bud form is pointed ovoidwith a broad base. By contrast to the Pristine variety, the bud colorwhen sepals first divide is white; when half blown the upper side ofpetals is white, and the lower side of petals is white. The sepals havean outer surface color near Scheeles Green (860/3), usually heavilyshaded with Garnet Brown (00918), numerous stipitate glands on edges andouter surface. Inner surface is near Scheeles Green (860/3),occasionally shaded with Garnet Brown (00918), and with a little whitetomentum. Three appendaged sepals are lightly appendaged. Twounappendaged sepals are hairy edged. The receptacle color is nearScheeles Green (860/3) shaded with Garnet Brown (00918), of a funnelshape, large size and smooth surface. The peduncle is of medium to shortlength, slightly glandular surface. Peduncle color is bronzy, and thepeduncle is stiff and erect. Petals show a slow recurving when opening.

Bloom

Bloom size is large, with an average open size of four and one-half tofive and one-half inches, borne singly or several together. The stemsare strong, and medium. The form when first open is high center. Thisform is retained to the end. Under normal conditions there are thirty tothirty-five petals. Unlike the Pristine variety, the upper side of petalat the flower center is white, as is the reverse side of the petals,with a slight indication of yellow pigment as indicated by a faintoverlay of near Yellow Green Group 154D (The Royal HorticulturalSociety), especially at the base of the petals. The general tonality atthe end of the first day shows no change in color. At the end of thethird day, there remains no discoloration.

The fragrance is slight. The petal texture is thick and leathery, of around shape and the tips are slightly recurved.

The arrangement is loosely imbricated with few petaloids in the center.The blooms drop off cleanly, and last both on the plant and as a cutflower for a long time.

Reproductive Parts

The anthers are medium size, of yellow color and arranged regularlyaround the styles. The filaments are near Rose Madder (23/1) in color.The pollen is lemon yellow, the styles along distal half are near RoseMadder (23/1) and along basal half near Primrose Yellow (601/2). Stigmasare yellow.

Plant

A very vigorous bush, with branching and being slightly sprawly.

Foliage

Very large to large size, abundant in quantity. The new foliage is nearGarnet Brown (00918/3), and the old foliage is near Parsley Green(00962). Normal mid-stem leaves have five, and occasionally seven,leaflets.

The leaflets are of an oval pointed shape, the upper side of which aresemi-glossy, and have a serrated edge. The serration is single and smallin size. Petiole rachis is green with reddish markings near the axis andpetiole underside has large prickles. There are many stipitate glands onall surfaces of rachis and the stipules are long and glandular edged.The foliage is resistant to mildew under normal growing conditions atIrvine, Calif.

Wood

New wood is near Garnet Brown (00918/3), with a smooth bark. Old wood isgreen with a smooth bark.

Prickles

There are many to an ordinary number of prickles on main canes from thebase and on laterals from the main canes. The form is medium, broadbased and hooked downward. Color when young is brown. The prickles areirregularly positioned.

Small Prickles

There are no small prickles on the main stalks or on the laterals.

Parentage

A color mutation of the Pristine variety.

Classification

Botanical is rosa hybrid. Commercial is hybrid tea.

I claim:
 1. A new and distinct variety of rose plant and parts thereofof the hybrid tea class substantially as herein shown and described,characterized particularly as to novelty by the unique combination ofits vigorous, well branched growth, an abundance of large, dark green,semi-glossy foliage with blooms of white having a slight indication ofyellow pigment and very little fragrance, and with numerous stipitateglands on the edge and outer surface of sepals on the rachis.